27
Switch Installation
Connecting to Power
Figure 13
Completed DC Power Connections on the Power Connectors
If your power source is –48 VDC, this table describes the your wiring connections for
Figure 13 on page 27
.
Attaching the Power Connectors to the Switch
To attach the power connectors to the front panel of the switch, follow these steps:
1.
Insert one power connector into the DC-A receptacle on the switch front panel, and the other into the DC-B
receptacle. See
Figure 10 on page 24
.
Warning:
Failure to securely tighten the captive screws can result in an electrical arc if the connector is accidentally
removed. Statement 397
Warning:
This product relies on the building’s installation for short-circuit (overcurrent) protection. Ensure that the
protective device is rated not greater than: 7.5A. Statement 1005
Warning:
When you connect or disconnect the power and/or alarm connector with power applied, an electrical arc
can occur. This could cause an explosion in hazardous area installations. Be sure that all power is removed from the
switch and any other circuits. Be sure that power cannot be accidentally turned on or verify that the area is
nonhazardous before proceeding. Statement 1058
Warning:
Use twisted-pair supply wires suitable for 86°F (30°C) above surrounding ambient temperature outside
the enclosure. Statement 1067
1
Power source A positive connection
3
Power source B positive connection
2
Power source A return connection
4
Power source B return connection
1
Power source A ground connection
3
Power source B ground connection
2
Power source A –48 VDC connection
4
Power source B –48 VDC connection
33
202
3
1
2
3
4